Abstract: An improved mixing nozzle for a post-mix beverage dispenser having a water supply chamber co-axially surrounding a syrup supply port, has an elongate syrup diffuser having a spray head on its lower end, an upper water distribution disc on the diffuser having a plurality of apertures having a cumulative opening area for passage of water, a convex frusto-conical water spreader is directly below the upper disc, a lower water distribution disc is spaced below the upper disc and the spreader, the lower disc has a plurality of apertures and a clearance between itself and a nozzle spout, the cumulative area of the lower disc apertures and spout clearance is several times the area of the upper disc apertures, an enlarged water plenum is between the spreader and the lower disc, and the syrup diffuser has outlets to spray syrup into a water stream below the lower disc.